Analog Electronics
The current gain of a pnp transistor is

 the collector current divided by the emitter current.
 near zero.
 the ratio of collector current to emitter current.
 the negative of the npn current gain.

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Analog Electronics
Voltage Series (feedback also called series-shunt feedback) results in

Increase in both input & output impedances
Decreases in both input & output impedances
Decrease in input impedance & increase in output impedance
Increase in input impedance & decreases in output impedance

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